Fire-pot for stoves.



No. 698,708. Patented Apr. .29, I902.

w. J. KEEP.

FIRE POT FOR STOVES.

(Application filed Feb. 25, 1901.)

(-No Model.) 2 Sheets-Sheet L WITNESSES INVETOR 61/ 2 (gm 1% By @W X vAttorneys.

' Patented Apr. 29, I902.

w J KEEP FIRE PQT FUR STDVES.

(Application filed Feb. 25, 1901.

2 Sheets-Sheet 2.

([lo Model.)

INVENTOR y 1 fl n/a4,

Attorneys WITNESSES UNITED STATES PATENT EErcE.

YVILLIAM J. KEEP, OF DETROIT, MICHIGAN, ASSIGNOR TO THE MICHIGAN STOVECOMPANY, OF DETROIT, MICHIGAN.

FIRE-POT FOR STOVES.

SPECIFICATION forming part of Letters Patent No. 698,708, dated April29, 1902.

Application filed February 25, 1901.. Serial No. 48,772. (No model.)

To aZZ whom it may concern:

Beit known that I, \VILLIAM J. KEEP, a citizen of the United States,residing at Detroit, county of \Vayne, State of Michigan, have inventeda certain new and useful Improvement in Fire-Pots for Stoves; and Ideclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itpertains to make and use the same, reference being had to theaccompanying drawings, which introduced into the fuel from below throughthe grate.

It also has for its object an improved grate in which provision is madefor an opening of large size through which stones or clinkers may beremoved.

In the drawings, Figure 1 an elevation,

partly broken away. Fig. 2 is a reversed'plan. Fig. 3 is a perspectiveshowing details of the two rings which compose a fire-pot. Fig.4 shows asegment of the fire-pot ring and the plate which covers a groovetherein. Figs.

6, 6, 7 are sectional elevations showing a' cross-section of theair-chamber and showing the register of the slits through the rings andthe grooves in the lower ring. Figs. 8 and 9 are sectional elevations ofa modified form. Fig. 10 shows the shaking-ring which supports thesliding grate.

In Figs. 5 to 9 only-a part of the ring is shown.

The fire-pot is made up of two rings A and D, and of these the ring A,which forms the lower section of the pot, has a number of corrugations,convex outward, so that there is on the inner surface a number ofvertical grooves. Several of these vertical grooves are shallow and areleft open. Others are deep grooves covered by plates 13, and thesegrooves covered by plates B, secured by bolts at about the center ofsaid plates, said bolts extending approximately vertically to saidplates, as indicated most distinctly in Fig. 1, constitute air-passagesthat are open at the bottom, outside the fire-pot, and at the top leadinto an annular chamber. The annular chamber is made by providing thering A with an outward-extending flangea. The

ring D is formed with an inner face d, that in the assembled fire-potformsa continuation of the ring A, from which-it is, however, spaced bya horizontal slot 1). From near the top of the inner face (1 of the ringD an outward-extending flange (1. projects outward and downward to theouter. and upper edges of the flange a. The wall of the flange cl isnot, however, regular, but is broken up by providing it with high andlow sections, and the high sections constitute small domes 61 thatproduce irregularities in the chamber 6, making it higher at. placesthan it is at other places. The high dome-covered portions of thechamber 6 are regularly spaced around ,the ring, and opposite the middleof each dome is a notch f, extending through the wall d from its lowerperiphery upward. In the assembled-structure the annular chamber ecommunicates through a number of vertical passages a with the" outerair, and it communicates with the interior of the fire-pot through thehorizontal slotb and through the vertical slots f.

-On the outside of the ring A, between the corrugations which cover theair-duct, are a number ofi smaller corrugations, which strengthen thisportion of the pot and provide for its expansion.

In the form shown in Figs. 5, 6, and 7 the flange a extends outward fromthe ring A some little distance below the upper edge of said ring, andnotches f are cut in the upper portion of the ring A above the flange66. The flange d rests upon the flange a, so as to support the ring Dwith its lower edge above the upper edge of the ring A, thus forming theslot or opening I) in a plane above the flange a or above the bottom ofthe chamber e.

In Figs. 6, 7, and 9 substantially the same construction that is shownin Fig. 5 is found; but the ring A is shifted with respectto the ring Dso that the notches f and f no longer register; but each notch of thelower ring is placed between two notches of the upper ring.

Figs. 8 and 9 show the flange a nearly horizontal.

In each form there are lugs L to support a shaking-grate G, which-restson the lugs and which is provided with several large openings 1 2 3 4,one at the rear with respect to the front door of the stove and one ateach side. A slide 8, which rests on lugs T on the grate G, is arrangedto close or partially close these openings, the slide itself beingprovided with small air-openings through it, and the slide closes overthe large openings, but itself furnishes air-passages through the smallopenings. The slide is provided with a removable handle it, by means ofwhich the combined grate, composed of both the grate and the slide, canbe vibrated. The middle part of the grate G is solid and coned upward.

X X are lugs extending from the grate G and serving to guide the same.

What I claim is- 1. In a fire-pot, the combination of an upper and lowersection provided with cooperating flanges extending outwardly from thewalls thereof, said flanges formed to space the walls of the uppersection from those of the lower section and to provide between them andthe said walls an annular air-space leading into the fire-pot, the Wallsof the lower section being bent outward to form a groove extending fromthe upper to the lower edge of said lower section and a plate adapted toi form a continuation of the wall of said lower section and to coversaid groove so as to form an inclosed air-passage opening at its upperend into said air-space and opening at its lower end to the air belowthe fire-pot.

2. In a firepot, the combination of an upper and lower section providedwith cooperating flanges extending outwardly from the walls thereof,said flanges formed to-space the walls of the upper section from thoseof the lower section and to provide between them and the said walls anannular air-space leading into the fire-pot, the walls of the lowersection being bent outward to form a groove extending from the upper tothe lower edge of said lower section and a plate adapted to form acontinuation of the wall of said lower section and to cover said grooveso as to form an inclosed air-passage opening at its upper end into saidair-space and opening at its lower end to the air below the fire-pot,the outwardly-extending flange ot' the upper section being provided witha dome forming an enlargement of said annular air-space above saidair-passage.

In testimony whereof I sign this specification in the presence of twowitnesses.-

\VILLIAM J. KEEP.

lVitnesses:

MAY E. Ko'rr, CHARLES F. BURTON.

